<?php

class App_ECommerce_Cart_Form_AddItem extends Qs_Form
{
    protected $_controllerAction = 'addItem';

    protected function _initElements()
    {
        $this->addElement('hidden', 'productId');

        $this->addElement(
            'numeric',
            'quantity',
            ['label' => 'Quantity:', 'required' => true, 'precision' => 0]
        );

        $this->getElement('quantity')->addValidator('Int');

        $greaterThan = new Zend_Validate_GreaterThan(0);
        $greaterThan->setMessage(
            'Quantity must be greater than zero',
            Zend_Validate_GreaterThan::NOT_GREATER
        );
        $this->getElement('quantity')->addValidator($greaterThan, false);

        return $this;
    }

    protected function _initButtons()
    {
        $this->addElement(
            'submit',
            'btnSubmit',
            [
                'label'   => 'Add To Cart',
                'attribs' => ['class' => 'btn btn-primary'],
            ]
        );
        return $this;
    }
}